EP 1387420 A4 20060517 - GRAPHITE MATERIAL FOR NEGATIVE POLE OF LITHIUM SECONDARY BATTERY, METHOD OF MANUFACTURING THE GRAPHITE MATERIAL, AND LITHIUM SECONDARY BATTERY
Title (en)
GRAPHITE MATERIAL FOR NEGATIVE POLE OF LITHIUM SECONDARY BATTERY, METHOD OF MANUFACTURING THE GRAPHITE MATERIAL, AND LITHIUM SECONDARY BATTERY
Title (de)
GRAPHITMATERIAL FÜR DEN NEGATIVEN POL EINER LITHIUM-SEKUNDÄRBATTERIE, VERFAHREN ZUR HERSTELLUNG DES GRAPHITMATERIALS UND LITHIUM-SEKUNDÄRBATTERIE
Title (fr)
MATERIAU DE GRAPHITE DESTINE AU POLE NEGATIF D'UNE BATTERIE SECONDAIRE AU LITHIUM
Publication
Application
Priority
- JP 0201861 W 20020228
- JP 2001062351 A 20010306
Abstract (en)
[origin: EP1387420A1] This invention relates to a graphite material for negative electrode of lithium secondary battery. This graphite material is obtained by carbonizing the pulverized green coke to yield coke, adding one kind or more of boron or a compound thereof to the coke, graphitizing the resulting mixture and controlling the particle size of the product graphite. This graphite material for negative electrode is characterized by showing a tap density of 0.95 g/cm<3> or more after tapping 20 times or 1.15 g/cm<3> or more after tapping 300 times and a BET specific surface area of 1.5 m<2>/g or less. A lithium secondary battery made by the use of this graphite material for negative electrode has a large discharge capacity and suffers little loss during charging and discharging.
IPC 1-7
IPC 8 full level
C01B 31/04 (2006.01); H01M 4/587 (2010.01); H01M 10/05 (2010.01)
CPC (source: EP KR US)
C01B 32/20 (2017.07 - EP US); C01B 32/205 (2017.07 - EP US); H01M 4/04 (2013.01 - KR); H01M 4/133 (2013.01 - EP US); H01M 4/583 (2013.01 - EP KR US); H01M 10/0525 (2013.01 - KR); C01P 2004/61 (2013.01 - EP US); C01P 2006/11 (2013.01 - EP US); C01P 2006/12 (2013.01 - EP US); C01P 2006/40 (2013.01 - EP US); H01M 2004/021 (2013.01 - EP US); Y02E 60/10 (2013.01 - EP)
Citation (search report)
- [X] EP 0955684 A1 19991110 - SONY CORP [JP]
- [A] EP 0754746 A1 19970122 - NIPPON STEEL CHEMICAL CO [JP]
- See references of WO 02071515A1
Designated contracting state (EPC)
CH DE LI
DOCDB simple family (publication)
EP 1387420 A1 20040204; EP 1387420 A4 20060517; CN 100589264 C 20100210; CN 1496588 A 20040512; JP 2002270169 A 20020920; JP 4945029 B2 20120606; KR 20030086292 A 20031107; US 2004091782 A1 20040513; US 7141229 B2 20061128; WO 02071515 A1 20020912
DOCDB simple family (application)
EP 02701638 A 20020228; CN 02806098 A 20020228; JP 0201861 W 20020228; JP 2001062351 A 20010306; KR 20037011696 A 20030905; US 46985403 A 20030905